A 55-year-old Delhi Police sub-inspector was mowed down by a speeding truck on Thursday night in Outer Delhi's Alipur area.
The errant truck driver, identified as Rajat Kumar (19) has been arrested.
According to police, the incident took place around 10.30 pm on Thursday night when the victim, identified as Hazarilal, posted at the Bhalswa Dairy police station in North-West district, was on his way to Narela on his bike. He was on duty when the incident took place.
"As he reached Shani temple and stopped his bike at Alipur red light, the speeding truck came from behind and mowed him down killing him instantly," said a senior police official.